Re: (ngtrans) Joint DNSEXT & NGTRANS summary

[Keith Moore]

> The only thing to do is to have an RFC for the organization to tell
> renumbering with A6 is as easy as with NAT.

only thing is, it's not as easy with A6 as it is with NAT.

if you use NATs to renumber, when you change prefixes the only thing
you change is the NAT.  the NAT does translation of addresses within
external DNS queries and responses for you.  all of your internal
routers, firewalls, hosts, applications, etc. stay the same.

if you renumber using IPv6, all of that state in routers, firewalls,
hosts, applications, etc has to change somehow, and it has to change
with minimal disruption of service.  A6 only addresses one part of that.

renumbering is a hard problem.

Keith